John Varley's monumental Gaean trilogy--repackaged....

Seven suburban misfits are constructing a spaceship out of old tanker cars. The plan is to beat the Chinese to Mars--in under four days at three million miles an hour. It would be history in the making if it didn't sound so insane....

Lieutenant Patricia Kelly Elizabeth Strickland-otherwise known as Podkayne-has joined the Music, Arts, and Drama Division of the Martian Navy, passing the audition with a little help from some higher-ups. And now she's going to Europa, one of Jupiter's many moons, to be an entertainer. But she's about to learn that there can be plenty of danger to go around in the Martian Navy, even if you've just signed on to sing.

...

Second in the Gaean Trilogy. Human explorers have entered the sprawling mind of the alien Gaea. Now they must fight her will. For she is much too powerful. And definitely insane....

An intact wooly mammoth is discovered frozen in Canada. Huddled next to the huge creature is the mummified body of a Stone Age man around 12,000 years old. And he is wearing a wristwatch....

The satellite-sized alien Gaea has gone completely insane. She has transformed her love of old movies into monstrous realities. She is Marilyn Monroe. She is King Kong. And now she must be destroyed....